path: root/include/svx/sdr/contact/objectcontact.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_SVX_SDR_CONTACT_OBJECTCONTACT_HXX
#define INCLUDED_SVX_SDR_CONTACT_OBJECTCONTACT_HXX

#include <svx/sdr/animation/objectanimator.hxx>
#include <svx/svxdllapi.h>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <memory>

class SdrLayerIDSet;
namespace tools { class Rectangle; }
class SdrPageView;
class OutputDevice;

namespace basegfx {
    class B2DRange;
    class B2DHomMatrix;
}

namespace sdr { namespace contact {

class DisplayInfo;
class ViewContact;
class ViewObjectContactRedirector;

class SVX_DLLPUBLIC ObjectContact
{
private:
    // make ViewObjectContact a friend to exclusively allow it to use
    // AddViewObjectContact/RemoveViewObjectContact
    friend class ViewObjectContact;

    // All VOCs which are created using this OC, thus remembering this OC
    // as a reference. All those VOCs need to be deleted when the OC goes down.
    // Registering and de-registering is done in the VOC constructors/destructors.
    std::vector< ViewObjectContact* >               maViewObjectContactVector;

    // A new ViewObjectContact was created and shall be remembered.
    void AddViewObjectContact(ViewObjectContact& rVOContact);

    // A ViewObjectContact was deleted and shall be forgotten.
    void RemoveViewObjectContact(ViewObjectContact& rVOContact);

    // the primitiveAnimator which is used if this View and/or the contained primitives
    // support animatedSwitchPrimitives
    sdr::animation::primitiveAnimator               maPrimitiveAnimator;

    // The redirector. If set it is used to pipe all supported calls
    // to the redirector
    ViewObjectContactRedirector*                    mpViewObjectContactRedirector;

    // the Primitive2DParameters containing view information
    drawinglayer::geometry::ViewInformation2D       maViewInformation2D;

    // flag for preview renderer
    bool                                            mbIsPreviewRenderer : 1;

protected:
    // Interface to allow derivates to travel over the registered VOC's
    sal_uInt32 getViewObjectContactCount() const { return maViewObjectContactVector.size(); }
    ViewObjectContact* getViewObjectContact(sal_uInt32 a) const { return maViewObjectContactVector[a]; }

    // interface to allow derivates to set PreviewRenderer flag
    void setPreviewRenderer(bool bNew) { mbIsPreviewRenderer = bNew; }

    // interface to allow derivates to set ViewInformation2D
    void updateViewInformation2D(const drawinglayer::geometry::ViewInformation2D& rViewInformation2D) { maViewInformation2D = rViewInformation2D; }

public:
    // basic constructor
    ObjectContact();
    virtual ~ObjectContact() COVERITY_NOEXCEPT_FALSE;

    // LazyInvalidate request. This is used from the VOCs to mark that they
    // got invalidated by an ActionChanged() call. An active view needs to remember
    // this and take action on it. Default implementation directly calls back
    // triggerLazyInvalidate() which promptly handles the request
    virtual void setLazyInvalidate(ViewObjectContact& rVOC);

    // call this to support evtl. preparations for repaint. Default does nothing
    virtual void PrepareProcessDisplay();

    // Process the whole displaying
    virtual void ProcessDisplay(DisplayInfo& rDisplayInfo);

    // test if visualizing of entered groups is switched on at all. Default
    // implementation returns sal_False.
    virtual bool DoVisualizeEnteredGroup() const;

    // get active group's (the entered group) ViewContact
    virtual const ViewContact* getActiveViewContact() const;

    // Invalidate given rectangle at the window/output which is represented by
    // this ObjectContact. Default does nothing.
    virtual void InvalidatePartOfView(const basegfx::B2DRange& rRange) const;

    // Get info about the need to visualize GluePoints. The default
    // is that it is not necessary.
    virtual bool AreGluePointsVisible() const;

    // method to get the primitiveAnimator
    sdr::animation::primitiveAnimator& getPrimitiveAnimator() {  return maPrimitiveAnimator; }

    // check if text animation is allowed. Default is sal_true.
    virtual bool IsTextAnimationAllowed() const;

    // check if graphic animation is allowed. Default is sal_true.
    virtual bool IsGraphicAnimationAllowed() const;

    // access to ViewObjectContactRedirector
    ViewObjectContactRedirector* GetViewObjectContactRedirector() const {  return mpViewObjectContactRedirector; }
    void SetViewObjectContactRedirector(ViewObjectContactRedirector* pNew);

    // print? Default is false
    virtual bool isOutputToPrinter() const;

    // recording MetaFile? Default is false
    virtual bool isOutputToRecordingMetaFile() const;

    // pdf export? Default is false
    virtual bool isOutputToPDFFile() const;

    // gray display mode
    virtual bool isDrawModeGray() const;

    // high contrast display mode
    virtual bool isDrawModeHighContrast() const;

    // check if this is a preview renderer. Default is sal_False.
    bool IsPreviewRenderer() const { return mbIsPreviewRenderer; }

    // get Primitive2DParameters for this view
    const drawinglayer::geometry::ViewInformation2D& getViewInformation2D() const { return maViewInformation2D; }

    /// access to SdrPageView. May return 0L like the default implementations do. Override as needed.
    virtual SdrPageView* TryToGetSdrPageView() const;

    /// access to OutputDevice. May return 0L like the default implementations do. Override as needed.
    virtual OutputDevice* TryToGetOutputDevice() const;

    // reset ViewPort at internal ViewInformation2D. This is needed when the OC is used
    // not for ProcessDisplay() but to get a VOC associated with it. When trying to get
    // a sequence of primitives from the VOC then, the last initialized ViewPort from
    // the last ProcessDisplay() is used for geometric visibility testing. If this is not
    // wanted (like in such cases) this method is used. It will reuse the current
    // ViewInformation2D, but clear the ViewPort (no ViewPort means all is visible)
    void resetViewPort();

    // interface to support GridOffset for non-linear ViewToDevice transformation (calc)
    virtual bool supportsGridOffsets() const;
    virtual void calculateGridOffsetForViewOjectContact(
        basegfx::B2DVector& rTarget,
        const ViewObjectContact& rClient) const;
    virtual void calculateGridOffsetForB2DRange(
        basegfx::B2DVector& rTarget,
        const basegfx::B2DRange& rB2DRange) const;
    void resetAllGridOffsets();
};

}}


#endif // INCLUDED_SVX_SDR_CONTACT_OBJECTCONTACT_HXX

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